<template>
    <div>
        <city-header></city-header>
        <city-search :cities="cities"></city-search>
        <city-list
         :cities="cities"
         :hot="hotCities"
         :letter="letter"
        ></city-list>
        <city-alphabet
         :cities="cities"
         @change="handleLetterChange"
        ></city-alphabet> 
    </div>
</template>

<script>
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'
import axios from 'axios'
export default {
   name: "City",
   components:{
      CityHeader,
      CitySearch ,
      CityList,
      CityAlphabet
   } ,
   data () {
       return{
           cities:{},
           hotCities:[],
           letter: ''
       }
   },
   methods: {
       //发送Ajax请求数据
        getCityInfo () {
            axios.get('/static/mock/city.json')
                 .then(this.handleGetCityInfoSucc)
        },
         //响应请求
        handleGetCityInfoSucc (res) {
            res=res.data
            if(res.ret && res.data) {
              const data=res.data
              this.cities=data.cities
              this.hotCities=data.hotCities
            }
        },
       handleLetterChange (letter) {
           this.letter=letter
        } 
    },
    //页面加载完成时自动执行
    mounted () {
       this.getCityInfo()
  }
}
</script>

<style scoped>
</style>